wu-arch/kernels
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

minor update

Browse Source
This commit is contained in:
Blaise Tine
2020-11-28 03:22:11 -05:00
parent 457f831435
commit 0c3d91ee6d
1 changed files with 12 additions and 11 deletions
Download Patch File Download Diff File Expand all files Collapse all files

23
hw/rtl/cache/VX_tag_access.v vendored
View File

@@ -93,15 +93,13 @@ module VX_tag_access #(
assign use_read_tag = DRAM_ENABLE ? qual_read_tag : addrtag; // Tag is always the same in SM assign use_read_tag = DRAM_ENABLE ? qual_read_tag : addrtag; // Tag is always the same in SM
// use "case equality" to handle uninitialized tag when block entry is not valid // use "case equality" to handle uninitialized tag when block entry is not valid
wire tags_match = use_read_valid && (addrtag === use_read_tag); wire tags_match = use_read_valid && (addrtag === use_read_tag);
wire core_req_miss = valid_in && !is_snp_in && !is_fill_in
&& !tags_match;
assign use_do_write = valid_in assign use_do_write = valid_in
&& is_write_in && tags_match
&& use_read_valid && !is_snp_in
&& !core_req_miss && !is_fill_in
&& is_write_in
&& !force_miss_in && !force_miss_in
&& !stall; && !stall;
@@ -110,13 +108,16 @@ module VX_tag_access #(
&& !stall; && !stall;
assign use_invalidate = valid_in assign use_invalidate = valid_in
&& is_snp_in && tags_match
&& tags_match && is_snp_in
&& (use_read_dirty || snp_invalidate_in) && (use_read_dirty || snp_invalidate_in)
&& !force_miss_in && !force_miss_in
&& !stall; && !stall;
assign miss_out = core_req_miss; assign miss_out = valid_in
&& !tags_match
&& !is_snp_in
&& !is_fill_in;
assign dirty_out = valid_in && use_read_valid && use_read_dirty assign dirty_out = valid_in && use_read_valid && use_read_dirty
&& !(is_fill_in && tags_match); // discard writeback for redundant fills && !(is_fill_in && tags_match); // discard writeback for redundant fills